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Devin Jankowski
2023-06-21 12:46:23 -04:00
commit c70248a520
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iTechSharp/iTextSharp/text/pdf/PdfDate.cs Normal file
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using System;
using System.Text;
using System.Globalization;
/*
* Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
namespace iTextSharp.text.pdf {
/**
* <CODE>PdfDate</CODE> is the PDF date object.
* <P>
* PDF defines a standard date format. The PDF date format closely follows the format
* defined by the international standard ASN.1 (Abstract Syntax Notation One, defined
* in CCITT X.208 or ISO/IEC 8824). A date is a <CODE>PdfString</CODE> of the form:
* <P><BLOCKQUOTE>
* (D:YYYYMMDDHHmmSSOHH'mm')
* </BLOCKQUOTE><P>
* This object is described in the 'Portable Document Format Reference Manual version 1.3'
* section 7.2 (page 183-184)
*
* @see PdfString
* @see java.util.GregorianCalendar
*/
public class PdfDate : PdfString {
// constructors
/**
* Constructs a <CODE>PdfDate</CODE>-object.
*
* @param d the date that has to be turned into a <CODE>PdfDate</CODE>-object
*/
public PdfDate(DateTime d) : base() {
//d = d.ToUniversalTime();
value = d.ToString("\\D\\:yyyyMMddHHmmss", DateTimeFormatInfo.InvariantInfo);
string timezone = d.ToString("zzz", DateTimeFormatInfo.InvariantInfo);
timezone = timezone.Replace(":", "'");
value += timezone + "'";
}
/**
* Constructs a <CODE>PdfDate</CODE>-object, representing the current day and time.
*/
public PdfDate() : this(DateTime.Now) {}
/**
* Adds a number of leading zeros to a given <CODE>string</CODE> in order to get a <CODE>string</CODE>
* of a certain length.
*
* @param i a given number
* @param length the length of the resulting <CODE>string</CODE>
* @return the resulting <CODE>string</CODE>
*/
private static String SetLength(int i, int length) {
return i.ToString().PadLeft(length, '0');
}
/**
* Gives the W3C format of the PdfDate.
* @return a formatted date
*/
public String GetW3CDate() {
return GetW3CDate(value);
}
/**
* Gives the W3C format of the PdfDate.
* @param d the date in the format D:YYYYMMDDHHmmSSOHH'mm'
* @return a formatted date
*/
public static String GetW3CDate(String d) {
if (d.StartsWith("D:"))
d = d.Substring(2);
StringBuilder sb = new StringBuilder();
if (d.Length < 4)
return "0000";
sb.Append(d.Substring(0, 4)); //year
d = d.Substring(4);
if (d.Length < 2)
return sb.ToString();
sb.Append('-').Append(d.Substring(0, 2)); //month
d = d.Substring(2);
if (d.Length < 2)
return sb.ToString();
sb.Append('-').Append(d.Substring(0, 2)); //day
d = d.Substring(2);
if (d.Length < 2)
return sb.ToString();
sb.Append('T').Append(d.Substring(0, 2)); //hour
d = d.Substring(2);
if (d.Length < 2) {
sb.Append(":00Z");
return sb.ToString();
}
sb.Append(':').Append(d.Substring(0, 2)); //minute
d = d.Substring(2);
if (d.Length < 2) {
sb.Append('Z');
return sb.ToString();
}
sb.Append(':').Append(d.Substring(0, 2)); //second
d = d.Substring(2);
if (d.StartsWith("-") || d.StartsWith("+")) {
String sign = d.Substring(0, 1);
d = d.Substring(1);
String h = "00";
String m = "00";
if (d.Length >= 2) {
h = d.Substring(0, 2);
if (d.Length > 2) {
d = d.Substring(3);
if (d.Length >= 2)
m = d.Substring(0, 2);
}
sb.Append(sign).Append(h).Append(':').Append(m);
return sb.ToString();
}
}
sb.Append('Z');
return sb.ToString();
}
public static DateTime Decode(string date) {
if (date.StartsWith("D:"))
date = date.Substring(2);
int year, month = 1, day = 1, hour = 0, minute = 0, second = 0;
int offsetHour = 0, offsetMinute = 0;
char variation = '\0';
year = int.Parse(date.Substring(0, 4));
if (date.Length >= 6) {
month = int.Parse(date.Substring(4, 2));
if (date.Length >= 8) {
day = int.Parse(date.Substring(6, 2));
if (date.Length >= 10) {
hour = int.Parse(date.Substring(8, 2));
if (date.Length >= 12) {
minute = int.Parse(date.Substring(10, 2));
if (date.Length >= 14) {
second = int.Parse(date.Substring(12, 2));
}
}
}
}
}
DateTime d = new DateTime(year, month, day, hour, minute, second);
if (date.Length <= 14)
return d;
variation = date[14];
if (variation == 'Z')
return d.ToLocalTime();
if (date.Length >= 17) {
offsetHour = int.Parse(date.Substring(15, 2));
if (date.Length >= 20) {
offsetMinute = int.Parse(date.Substring(18, 2));
}
}
TimeSpan span = new TimeSpan(offsetHour, offsetMinute, 0);
if (variation == '-')
d += span;
else
d -= span;
return d.ToLocalTime();
}
}
}